Which of the following $3 d -m e t a l$ ion will give the lowest enthalpy of hydration $(\Delta_{ hyd } H )$ when dissolved in water?
Which of the following $3 d -m e t a l$ ion will give the lowest enthalpy of hydration $(\Delta_{ hyd } H )$ when dissolved in water?
- [JEE MAIN 2022]
- A
$Cr ^{2+}$
- B
$Mn ^{2+}$
- C
$Fe ^{2+}$
- D
$Co ^{2+}$
Similar Questions
For the following Assertion and Reason, the correct option is
Assertion : For hydrogenation reactions, the catalytic activity increases from Group $5$ to Group $11$ metals with maximum activity shown by Group $7-9$ elements.
Reason : The reactants are most strongly adsorbed on group $7-9 $ elements.
For the following Assertion and Reason, the correct option is
Assertion : For hydrogenation reactions, the catalytic activity increases from Group $5$ to Group $11$ metals with maximum activity shown by Group $7-9$ elements.
Reason : The reactants are most strongly adsorbed on group $7-9 $ elements.
- [JEE MAIN 2020]
The spin only magnetic moments (in $BM$) for free $\mathrm{Ti}^{3+}, \mathrm{V}^{2+}$ and $\mathrm{Sc}^{3+}$ ions respectively are (At.No. $Sc: 21; Ti : 22; V : 23)$
The spin only magnetic moments (in $BM$) for free $\mathrm{Ti}^{3+}, \mathrm{V}^{2+}$ and $\mathrm{Sc}^{3+}$ ions respectively are (At.No. $Sc: 21; Ti : 22; V : 23)$
- [JEE MAIN 2021]
Which of the following statements is incorrect?
Which of the following statements is incorrect?
Which of the following have highest melting point
Which of the following have highest melting point
Electrons in a paramagnetic compound are
Electrons in a paramagnetic compound are